Variable: mouse-wheel-down-event
mouse-wheel-down-event is a customizable variable defined in
mwheel.el.gz.
Value
mouse-4
Documentation
Event used for scrolling down.
Source Code
;; Defined in /usr/src/emacs/lisp/mwheel.el.gz
(defcustom mouse-wheel-down-event
(if (or (featurep 'w32-win) (featurep 'ns-win)
(featurep 'haiku-win) (featurep 'pgtk-win))
'wheel-up
'mouse-4)
"Event used for scrolling down."
:group 'mouse
:type 'symbol
:set 'mouse-wheel-change-button)